Severe FPS spikes in Breach since Mirage patch

Since the Mirage patch, I’ve been experiencing extreme FPS drops in Breach instances in Path of Exile. My FPS sometimes drops to 8–15, even in small Breaches, and sometimes with box farming, when i enter the mirage. Previously i had no issues with very juiced, mob-dense farms either.

System specs:

CPU: Intel Core i5-12400F

GPU: Sapphire RX 6700 XT 12GB (latest driver: Adrenalin 26.2.2)

RAM: 16GB DDR5 4800MHz (Dual Channel)

OS: Windows 11

Observations:

CPU usage: ~50% during spikes

Memory usage: ~85%

GPU load: normally 20–70%, but drops to 10–30% during FPS spikes, temperature ~50°C

Stress tests (FurMark) show GPU can maintain 90–97% load with no issues → GPU hardware is fine

RAM is in Dual Channel, so memory bandwidth is not the bottleneck

Other notes:

Radeon settings: Anti-Lag, Chill, Boost off

Windows Graphics: High Performance set for PoE, Optimization for windowed games tested on/off

Summary:
Can it be game-side or driver-side issue, or should i keep looking, as my hardware performs well in stress tests and the problem only occurs in PoE Breach instances. This problem did not exist before the Mirage patch.

Hope this helps the devs identify the cause.

Ive also had the same problem since the patch. Massive hitching and feeling like im playing through mud only during breaches. the CPU time sits at about 3-5MS during mapping but the moment i hit a breach it spikes to 10-20MS. Shaders constantly spike, and the game chugs like crazy. It does the whole zoom speed up after things calm down a bit. My actualy CPU usage never spikes above 30% during the chugging and GPU seems unfazed. For me this started only a few days ago.

CPU: Ryzen 7 9800X3D
GPU: RTX 4080
RAM: 32GB 6000 MHZ
OS: Windows 11

So i noticed the spikes started happening a few days ago and on the 12th there was a windows update. After googling it people complained about massive frame spikes in games and bad performance. I uninstalled it and it has resolved my issue. Windows update strikes again. It was update KB5079473

Same issue happening here... some maps turn into 1-5 fps, unplayable at all!

I wish there was one day in the near future, when we can play without massive constant lag spikes, as it was before this league...

"

Kenshin324#0609 wrote:

So i noticed the spikes started happening a few days ago and on the 12th there was a windows update. After googling it people complained about massive frame spikes in games and bad performance. I uninstalled it and it has resolved my issue. Windows update strikes again. It was update KB5079473

Sadly, this didn't help for me. =/ Is it in just the mirages for you? Because, it is for me...

did you all have any luck with it? I'm suffering with the same stuff

I can only still report that these issues are unresolved.
I have a Ryzen 5700X3D paired with a RX9070XT.
When doing the breach strat frames can drop to as low as 2FPS (but for sure will drop to 10-20) while both GPU and CPU show severe underusage.
Please help its unbearable.

9800X3d and RX9070XT , same issue. frame rate drops to a halt during breaches :(