diff --git a/himbaechel/uarch/ng-ultra/ng_ultra.cc b/himbaechel/uarch/ng-ultra/ng_ultra.cc
index 40936757..af058b7b 100644
--- a/himbaechel/uarch/ng-ultra/ng_ultra.cc
+++ b/himbaechel/uarch/ng-ultra/ng_ultra.cc
@@ -251,13 +251,6 @@ TileTypeExtra NgUltraImpl::tile_type(int tile) const
     return (TileTypeExtra)data.tile_type;
 }
 
-void NgUltraImpl::preRoute()
-{
-    log_break();
-    route_lowskew();
-    log_break();
-}
-
 bool NgUltraImpl::get_mux_data(BelId bel, IdString port, uint8_t *value)
 {
     return get_mux_data(ctx->getBelPinWire(bel, port), value);
@@ -817,7 +810,7 @@ void NgUltraImpl::fixup_crossbars()
                             }
                             NPNR_ASSERT(found_pip != PipId());
                             // rebind
-                            log_info(" replacing crossbar pip %s with %s on %s\n", ctx->nameOfPip(pip), ctx->nameOfPip(found_pip), ctx->nameOf(ni));
+                            //log_info(" replacing crossbar pip %s with %s on %s\n", ctx->nameOfPip(pip), ctx->nameOfPip(found_pip), ctx->nameOf(ni));
                             ctx->bindPip(found_pip, ni, STRENGTH_STRONG);
                         }
                     }
diff --git a/himbaechel/uarch/ng-ultra/ng_ultra.h b/himbaechel/uarch/ng-ultra/ng_ultra.h
index 507f7831..98ab80bf 100644
--- a/himbaechel/uarch/ng-ultra/ng_ultra.h
+++ b/himbaechel/uarch/ng-ultra/ng_ultra.h
@@ -52,7 +52,6 @@ struct NgUltraImpl : HimbaechelAPI
     // Flow management
     void pack() override;
     void postPlace() override;
-    void preRoute() override;
     void postRoute() override;
 
     void configurePlacerHeap(PlacerHeapCfg &cfg) override;
@@ -99,7 +98,6 @@ public:
 
 TESTABLE_PRIVATE:
     void write_bitstream_json(const std::string &filename);
-    void route_lowskew();
     void parse_csv(const std::string &filename);
     void remove_constants();
     bool update_bff_to_csc(CellInfo *cell, BelId bel, PipId dst_pip);
diff --git a/himbaechel/uarch/ng-ultra/pack.cc b/himbaechel/uarch/ng-ultra/pack.cc
index fc325984..52290290 100644
--- a/himbaechel/uarch/ng-ultra/pack.cc
+++ b/himbaechel/uarch/ng-ultra/pack.cc
@@ -2487,72 +2487,4 @@ void NgUltraPacker::insert_bypass_gck()
         }
     }
 }
-void NgUltraImpl::route_lowskew()
-{
-    log_info("Routing lowskew nets...\n");
-    for (auto &net : ctx->nets) {
-        NetInfo *glb_net = net.second.get();
-        if (!glb_net->driver.cell)
-            continue;
-
-        // check if we have a lowskew net, skip otherwise
-        if (!(is_ring_clock_source(glb_net->driver) || is_tube_clock_source(glb_net->driver)))
-            continue;
-
-        log_info("    routing net '%s'\n", glb_net->name.c_str(ctx));
-        ctx->bindWire(ctx->getNetinfoSourceWire(glb_net), glb_net, STRENGTH_LOCKED);
-
-        for (auto &usr : glb_net->users) {
-            std::queue<WireId> visit;
-            dict<WireId, PipId> backtrace;
-            WireId dest = WireId();
-            // skip nets that are not part of lowskew routing
-            if (!(is_fabric_lowskew_sink(usr) || is_tube_clock_sink(usr) || is_ring_over_tile_clock_sink(usr)))
-                continue;
-
-            auto sink_wire = ctx->getNetinfoSinkWire(glb_net, usr, 0);
-            if (ctx->debug) {
-                auto sink_wire_name = "(uninitialized)";
-                if (sink_wire != WireId())
-                    sink_wire_name = ctx->nameOfWire(sink_wire);
-                log_info("        routing arc to %s.%s (wire %s):\n", usr.cell->name.c_str(ctx), usr.port.c_str(ctx),
-                         sink_wire_name);
-            }
-            visit.push(sink_wire);
-            while (!visit.empty()) {
-                WireId curr = visit.front();
-                visit.pop();
-                if (ctx->getBoundWireNet(curr) == glb_net) {
-                    dest = curr;
-                    break;
-                }
-                for (auto uh : ctx->getPipsUphill(curr)) {
-                    if (!ctx->checkPipAvail(uh))
-                        continue;
-                    WireId src = ctx->getPipSrcWire(uh);
-                    if (backtrace.count(src))
-                        continue;
-                    if (!ctx->checkWireAvail(src) && ctx->getBoundWireNet(src) != glb_net)
-                        continue;
-                    backtrace[src] = uh;
-                    visit.push(src);
-                }
-            }
-            if (dest == WireId()) {
-                log_info("            failed to find a route using dedicated resources. %s -> %s\n",glb_net->driver.cell->name.c_str(ctx),usr.cell->name.c_str(ctx));
-            }
-            while (backtrace.count(dest)) {
-                auto uh = backtrace[dest];
-                dest = ctx->getPipDstWire(uh);
-                if (ctx->getBoundWireNet(dest) == glb_net) {
-                    NPNR_ASSERT(glb_net->wires.at(dest).pip == uh);
-                    break;
-                }
-                if (ctx->debug)
-                    log_info("            bind pip %s --> %s\n", ctx->nameOfPip(uh), ctx->nameOfWire(dest));
-                ctx->bindPip(uh, glb_net, STRENGTH_LOCKED);
-            }
-        }
-    }
-}
 NEXTPNR_NAMESPACE_END