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For those who use dual setup please help me :(
I already posted this on reddit, but posting here too for more help :(This post is for users familiar with dual GPU setups where LSFG runs on a separate GPU from the main render GPU. This configuration should maintain your baseline FPS when LSFG is enabled, allowing LSFG to multiply that number instead of taking a performance hit on a single GPU. For example, at 4K resolution, you should maintain 60 FPS after enabling LSFG and achieve 2x/3x/4x multiplication, versus dropping to 45 FPS on a single GPU setup.My current setup includes:4070 Ti paired with Intel Arc A750AMD 7800X3D CPUASUS ROG Strix B650E-F motherboard (supports 4x16 and 4x4 when both GPU slots are populated)
I followed Ravenger's Discord guide and this Steam guide (which are essentially the same): https://steamcommunity.com/sharedfiles/filedetails/?id=3347817209
I've configured everything according to the guides: selected my render GPU in Windows 11 graphics settings and NVIDIA OpenGL, connected my display to the LSFG GPU, and selected the LSFG GPU in the "Preferred GPU" LSFG settings. However, I'm experiencing issues.Currently, when I have 140 FPS and enable LSFG, it drops to 80/80. Another weird thing is before enabling LSFG, my render GPU usage is around 99% with LSFG GPU at 80%. After enabling LSFG, the render GPU drops to 48% while the LSFG GPU increases to 99%. This seems incorrect, as the render GPU should maintain 99% usage since it's still rendering the game.I've tried several troubleshooting steps:1, Disabled all VRR2. Tested different configurations (e.g., connecting display to render GPU and running LSFG on A750)3. Updated both NVIDIA and Intel drivers (its a fresh install anyways)4. Performed a fresh Windows 11 installation5. Monitored temperatures (both GPUs remain below 75°C)One potential issue might be power delivery: the A750 requires two 8-pin GPU cables, but I'm currently using a single pigtail dual 6+2 GPU cable. Would using separate 8-pin cables help? Another potential issue is maybe I need to update my drivers from my mobo vendor since its a fresh install, I didn't get any chipset drivers or anything like that but I highly doubt thats the cause, as thats more CPU related and my CPU is running perfect temps and score on R23My last resort is testing with a different GPU (possibly a 4070 from my family's PC) to determine if the A750 is bottlenecking the setup.I'm looking for suggestions, particularly from users who've encountered similar issues with dual setups or those familiar with this configuration. (I understand this is a relatively uncommon setup.)
Pic of my settings: https://imgur.com/a/wu7UQeD
Run Lossless scaling renderer/interpolation on the same GPU as the program you're using - using several GPUs is going to create latencies and stuttering. The reason for this is that all frames rendered by the GPU that's running the game must be sent to another GPU for scaling/interpolation only to be sent back again so that the GPU rendering the game can send the frames to the monitor. - it adds latency and unnecessary workload Alternatively, you could render the frames from Lossless Scaling on the same GPU that the monitor is connected to, but it will still create latencies and most likely stuttering.
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