Graphics issues on MacBook when in full screen

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I haven't played TLD for a while and played it a couple of days ago.  Before running it updated to the Episode 3 version.  During the time I wasn't playing I also updated MacOS to Catalina 10.15.1.  Now, when I play the game in full screen mode the graphics are all glitched - there are horizontal blocks of colour around the edges and interlacing effects.  By tweaking the resolution down to around 800 x 600 (or thereabouts) it worked once, but after a restart it did not work again.  Running in a window, however, is totally glitch free and I can run the game at the highest resolution (it's a bit slow but it works fine).  Does anyone know why this is happening? It's a shame there was a game and OS update and I suppose it could be either that is responsible.   All other games and applications play fine in full screen mode.  TLD used to play fine in fullscreen before the Ep3 and OS updates.

System report follows:


  Model Name: MacBook Pro

  Model Identifier: MacBookPro13,3

  Processor Name: Quad-Core Intel Core i7

  Processor Speed: 2.7 GHz

  Number of Processors: 1

  Total Number of Cores: 4

  L2 Cache (per Core): 256 KB

  L3 Cache: 8 MB

  Hyper-Threading Technology: Enabled

  Memory: 16 GB 2133 MHz

  Boot ROM Version:

  SMC Version (system): 2.38f8


Radeon Pro 455 2 GB

Intel HD Graphics 530 1536 MB


I went through the graphics trouble shooting tips on the support pages, but no luck.

Any clues appreciated.



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8 hours ago, Hawk said:

It is mentioned in this post that they are investigating this issue. ;)


Excellent, thank you, Hawk.  I confirm it's interaction with Catalina that is causing the issue - I downgraded to Mojave (10.14.4) today and the game is back to normal.  Perhaps there is a bug in Catalina.  I don't like this version of the OS anyway - Apple dumped the Dashboard.  Boo!


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26 minutes ago, woodspiral said:

Excellent, thank you, Hawk.


My pleasure. Glad it helped. :)

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Having this issue as well since Catalina. I don't really want to downgrade. I also performed the update available today 2019-12-11 and it still happens, no change. It is only fullscreen. If I start in windowed mode, then use the (+) button to go fullscreen it immediately starts happening, but when I bring up the border menu again (the border that on the top has the (X) (-) (+) buttons, or steam overlay it goes away. When the border slides back out of the way and it goes back to fullscreen the flickering comes back.

Man this is annoying. I've been using Nvidia GeForce NOW to play the game and have no issues while playing that way, but that always depends on a solid 50mbit connection to be smooth.

Please spend some time on this issue! I've been googling my brains out on it. All kinds of forums suggest its a vsync issue or a color depth but everything has been unhelpful.

It doesn't happen with any other game I play frequently. No other games do it so far (American Truck sim, Stardew Valley, Rimworld, Stellaris, Subnautica, Return of the Obra Dinn, Surviving Mars to name a few are all ok at full screen).

If it helps

MacBook Pro (15-inch, 2017)

Intel HD Graphics 630:

  Chipset Model:    Intel HD Graphics 630
  Type:    GPU
  Bus:    Built-In
  VRAM (Dynamic, Max):    1536 MB
  Vendor:    Intel
  Device ID:    0x591b
  Revision ID:    0x0004
  Automatic Graphics Switching:    Supported
  gMux Version:    4.0.29 [3.2.8]
  Metal:    Supported, feature set macOS GPUFamily2 v1
Color LCD:
  Display Type:    Built-In Retina LCD
  Resolution:    2880 x 1800 Retina
  Framebuffer Depth:    24-Bit Color (ARGB8888)
  Main Display:    Yes
  Mirror:    Off
  Online:    Yes
  Automatically Adjust Brightness:    No
  Connection Type:    Internal


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