[BUG] Routing bug on base chain for USDT->USDC swap

[Pomyk]

Is there an existing issue for this?

• I have searched the existing issues

Product

Trade

Current Behavior

For some swap values the routing is incorrect. For example if I try to swap 48000 USDT (or similar amount) it routes through V3 (1%) pool and would give 11 USDC (price impact 98.98%). When changed to 48200 or higher it routes correctly: V3 (0.01%) and sometimes Infinity Bin (0.0001%). Price impact < 0.2%.

Expected Behavior

It should give always the best routes.

Steps To Reproduce

1. On base chain choose swap USDT for USDC
2. Check different amounts of USDT (for example: 48000 - bad route, 49000 - good route).

Environment

- Device: PC
- OS: Ubuntu 24.04
- Browser: Firefox 143.0.1
- Wallet: Metamask 13.2.3

Anything else?

No response

[memoyil]

@Pomyk on which chain it happens?

[Pomyk]

@memoyil on Base

[Pomyk]

Now it fails with bigger amounts, like 70000.