Setup:
MBP 16" 2019 Base, i7, 5300m
Lg Ultrafine 5k
Zotac RTX 3060Ti Driver: 460.89 (latest)
Hello all, I'm having trouble getting acceptable performance from my new zotac rtx 3060ti. Previously I was using a rtx 2060 and got expected performance using loopback mode, within 10% of desktop numbers. My setup looks like: Lg Ultrafine 5k -> MBP in loopback mode. Egpu -> MBP.
With my new rtx 3060ti, I'm only getting +10% compared to the 2060 which translates to negligible gains in games. Performance is almost identical whether at 1080p or 1400p or 4k. I'm monitoring my gpu and cpu usage and GPU usage is always at 90%+ and CPU usage usually hovers around 50% in benchmarks so I shouldn't be CPU limited.
RTX2060 heaven benchmark: 2100 -- 1080p extreme 8AA,
RTX3060Ti heaven benchmark: 2500 -- 1080p extreme 8AA
Things I have tried:
* drivers that came with the rtx 3060 with no update
* uninstall bootcamp and clean install, but yielded the exact same numbers.
* use different thunderbolt cables
* using just the laptop monitor, no ultrafine, exact same numbers
* Limiting CPU power and unlimiting it. Exact same performance whether it's running @ 2.5ghz or 3.9ghz
Starting to think this Zotac is a POS, sadly there's not really any stock readily available for me to try a different GPU. Also don't have my desktop anymore so I can't plug in the GPU to a desktop.
Any suggestions or anyone else with a GPU similar to RTX 3060Ti can vouch for loopback performance numbers?
To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.
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@theobserver, Loopback performance is not great and can differ between cards. For example, Radeon Polaris (RX 580) performs great but Navi (RX 5700) loses a lot more performance in loopback mode. This could be a similar situation.
• external graphics card builds
• best laptops for external GPU
• eGPU enclosure buyer's guide
2021 15" ASUS TUF Dash F15 [11th,4C,H] + RTX 3080 @ 32Gbps-TB4 (AORUS Gaming Box) + Win10 2004 // my 3rd RTX 3080 build [build link]
@itsage, thanks for the insight! I saw several threads where loopback performance was only within 2%-10% of non-loopback mode in higher resolutions, still can't reach those numbers on my setup though. When I get a non-loopback external monitor/ better RTX30x0 card I'll report back on this thread with some results
To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.
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looking forward how exernal monitor is improving the output 
i am running 5600xt in loop back mode on my laptop