fix font weights in qt ui

selfdrive/ui/qt/home.cc

@@ -122,7 +122,7 @@ void OffroadHome::refresh() {
     border: 1px solid;
     border-radius: 5px;
     font-size: 40px;
-    font-weight: bold;
+    font-weight: 500;
     background-color: #E22C2C;
   )");
   if (alerts_widget->updateAvailable) {
@@ -276,7 +276,7 @@ void GLWindow::paintGL() {
 
     double cur_draw_t = millis_since_boot();
     double dt = cur_draw_t - prev_draw_t;
-    if (dt > 66){
+    if (dt > 66 && onroad){
       // warn on sub 15fps
       LOGW("slow frame(%llu) time: %.2f", ui_state.sm->frame, dt);
     }

selfdrive/ui/qt/offroad/onboarding.cc

@@ -12,7 +12,10 @@
 
 QLabel * title_label(QString text) {
   QLabel *l = new QLabel(text);
-  l->setStyleSheet(R"(font-size: 100px; font-weight: bold;)");
+  l->setStyleSheet(R"(
+    font-size: 100px;
+    font-weight: 400;
+  )");
   return l;
 }
 

selfdrive/ui/qt/offroad/settings.cc

@@ -271,12 +271,12 @@ SettingsWindow::SettingsWindow(QWidget *parent) : QFrame(parent) {
     QPushButton *btn = new QPushButton(panel.first);
     btn->setCheckable(true);
     btn->setStyleSheet(R"(
-      QPushButton {
+      * {
         color: grey;
         border: none;
         background: none;
         font-size: 65px;
-        font-weight: bold;
+        font-weight: 600;
         padding-top: 35px;
         padding-bottom: 35px;
       }

selfdrive/ui/qt/qt_window.cc

@@ -16,9 +16,6 @@ void setMainWindow(QWidget *w) {
   w->setFixedSize(vwp_w*scale, vwp_h*scale);
   w->show();
 
-  QFontDatabase::addApplicationFont("../assets/fonts/inter.ttf");
-  QApplication::setFont(QFont("Inter"));
-
 #ifdef QCOM2
   QPlatformNativeInterface *native = QGuiApplication::platformNativeInterface();
   wl_surface *s = reinterpret_cast<wl_surface*>(native->nativeResourceForWindow("surface", w->windowHandle()));

selfdrive/ui/qt/widgets/offroad_alerts.cc

@@ -55,7 +55,7 @@ OffroadAlert::OffroadAlert(QWidget* parent) : QFrame(parent) {
     QPushButton {
       color: black;
       font-size: 50px;
-      font-weight: 600;
+      font-weight: 500;
       border-radius: 30px;
       background-color: white;
     }