core/main: set GC threshold to 25%

core/src/apps/monero/sign_tx.py

@@ -16,7 +16,6 @@ async def sign_tx(ctx, received_msg, keychain):
         if __debug__:
             log.debug(__name__, "#### F: %s, A: %s", gc.mem_free(), gc.mem_alloc())
         gc.collect()
-        gc.threshold(gc.mem_free() // 4 + gc.mem_alloc())
 
         result_msg, accept_msgs = await sign_tx_dispatch(state, received_msg, keychain)
         if accept_msgs is None:

core/src/main.py

@@ -15,6 +15,12 @@ usb.bus.open()
 utils.set_mode_unprivileged()
 
 
+# set GC threshold to 25% of the heap capacity
+import gc
+
+gc.threshold(gc.mem_free() // 4 + gc.mem_alloc())
+
+
 def _boot_recovery() -> None:
     # load applications
     import apps.homescreen