[BUG]:

[HElNKEL]

Describe the Bug

Sudden frame dumps in all Ace Combat games (4, 5, Zero). Seems to toggle whenever facing a certain direction. Good example is on Ace Combat 5's Rendezvous, where peeking down to the ground at all dumps frames into nothing. Used to work fine, suddenly does not anymore after an update. Playing around with every setting accomplishes nothing. Not a CPU or GPU bottleneck, both aren't even halfway to peaking.

(Screenshot when looking at target area)

(Screenshot when looking away from target area)

Reproduction Steps

Can be in any sight mode, third person, first, or camera Any setting, tested at both 3x resolution and Native PS2 Any Aspect Ratio, any interlacing setting

Genuinely any circumstance, any setting. Simply look at a specific area on just about any mission and the frames and speed drop like a rock.

Expected Behavior

No response

PCSX2 Revision

Nightly v1.7.5064

Operating System

Windows 11

If Linux - Specify Distro

No response

CPU

AMD Ryzen 3 2300X Quad-Core Processor

GPU

Radeon RX 570 Series

GS Settings

At time of most recent check:

DISPLAY

Fullscreen Mode: Borderless Fullscreen Aspect Ratio: Standard (4:3) FMV Aspect Ratio: Standard (4:3) Deinterlacing: Adaptive (Top Field First) Bilinear Filtering: None NO CHECKS

RENDERING

Internal Resolution: Native (PS2) Mipmapping: Automatic Texture Filtering: Bilinear (PS2) Trilinear Filtering: Trilinear (PS2) Anisotropic Filtering: Off Dithering: Unscaled Blending Accuracy: Basic Texture Preloading: None NO CHECKS

TEXTURE REPLACEMENT

Asynchronous Texture Loading

POST PROCESSING CAS: None NO CHECK TV Shader: None NO CHECK

OSD

Show OSD Mssgs Show FPS Show CPU Usage Show Stats Show Settings Show Frame Times Show Speed % Show GPU Usage Warn about Unsafe

NO RECORDINGS

ADVANCED:

GS Dump: Zstandard Allow Exclusive Fullscreen: Automatic Override Texture Barriers: Automatic

Emulation Settings

SPEED CONTROL

Normal - 100 Fast - 200 Slow - 50 Limiter Tested both On and Off, no difference

SYSTEM SETTINGS EE Cycle Rate: 100 EE Cycle Skipping: Disabled Affinity Control: Disabled

Enable Multithreaded VU1 (MTVU) Enable Instant VUI

FRAME PACING Maximum Frame Latency: 2 Frames

Scale to Host Refresh Rate (Tested on/off)

GS Window Screenshots

No response

Logs & Dumps

GSdump just to be absolutely sure, taken when frames dump off. ac5gsdump.zip

[stenzek]

Not a bug. It's reading back hardware textures (RB number is non-zero). CPU is waiting for the GPU, that's why nothing is maxed out.

Use software renderer, disable readbacks, lower resolution, etc, are all possible mitigations. But you can't "fix" the game asking for downloads.