Better polling rate

firmware/src/main.c

@@ -228,6 +228,7 @@ static void core1_loop()
 
 static void core0_loop()
 {
+    uint64_t next_frame = time_us_64();
     while(1) {
         tud_task();
 
@@ -246,6 +247,9 @@ static void core0_loop()
         report_usb_hid();
 
         runtime_ctrl();
+
+        sleep_until(next_frame);
+        next_frame += 1001;
     }
 }