A: Yes, using PCSX2's built-in NetherSX2 online emulation. You need the USA ISO (SLUS-21059) and a partner with the same CRC. The lag is playable (30-50ms) if both users have fiber.
Let’s not forget Tekken 5 included a beat-em-up campaign, Devil Within. On original hardware, this mode suffered from noticeable frame drops when too many enemies appeared on screen. On an ISO running on modern hardware, that mode runs at a locked 60 FPS. It finally plays the way Namco intended. tekken 5 ps2 iso better
After testing 12 different dumps across 3 emulators and 2 real PS2s, here is the single "best" recommendation for 99% of players: A: Yes, using PCSX2's built-in NetherSX2 online emulation
Download: Tekken 5 (USA) (En,Ja,Fr,De,Es,It).chd – CRC
7E8F9A2B(Redump Verified) Patch with: Undub patch + Widescreen hex edit (or download CDRomance's pre-patched version). Run on: PCSX2 1.7.0+ with Vulkan, 4x Native, TC Offset 445/445, and Instant VIF1 gamefix. Download: Tekken 5 (USA) (En,Ja,Fr,De,Es,It)
This combination gives you: