bugfix: avoid effect speedups during transitions

Author: softhack007

wled00/FX_fcn.cpp

@@ -1932,7 +1932,7 @@ void WS2812FX::service() {
 
         if (frameDelay < speedLimit) frameDelay = FRAMETIME;                    // WLEDMM limit effects that want to go faster than target FPS
         if (seg.mode != FX_MODE_HALLOWEEN_EYES) seg.call++;
-        if (seg.transitional && frameDelay > FRAMETIME) frameDelay = FRAMETIME; // force faster updates during transition
+        if (seg.transitional && frameDelay > FRAMETIME_FIXED) frameDelay = FRAMETIME_FIXED; // force faster updates during transition // WLEDMM only if effect requested very slow updates
 
         seg.lastBri = seg.currentBri(seg.on ? seg.opacity:0);                   // WLEDMM remember for next time
         seg.handleTransition();