Avoid using RFI for HEVC on newer MediaTek SoCs

app/src/main/java/com/limelight/binding/video/MediaCodecHelper.java

@@ -296,11 +296,15 @@ public class MediaCodecHelper {
                 whitelistedHevcDecoders.add("omx.mtk");
 
                 // This SoC (MT8176 in GPD XD+) supports AVC RFI too, but the maxNumReferenceFrames setting
-                // required to make it work adds a huge amount of latency.
+                // required to make it work adds a huge amount of latency. However, RFI on HEVC causes
+                // decoder hangs on the newer GE8100, GE8300, and GE8320 GPUs, so we limit it to the
+                // Series6XT GPUs where we know it works.
+                if (glRenderer.contains("GX6")) {
                     LimeLog.info("Added omx.mtk to RFI list for HEVC");
                     refFrameInvalidationHevcPrefixes.add("omx.mtk");
                 }
             }
+        }
 
         initialized = true;
     }