Sprite Misalignment When Switching from My Client to OTCv8

[Khalish]

I'm having a serious issue migrating from my custom build of OTClient to OTCv8. My client uses the 854 protocol.

https://imgur.com/a/1ptSMBI

After the change, many sprites are completely misaligned or broken (see attached screenshot). Floors, objects, and walls are rendering incorrectly.

I'm also receiving these error messages from ProtocolGame's parsing in the console:

What could be causing these sprite mismatches?

 

[Wazzup88]

Really not sure. But you may need to check your game_features and make sure any extra things you need enabled for your sprites, is enabled. Thats just my first thought.

 

[Khalish]

Really not sure. But you may need to check your game_features and make sure any extra things you need enabled for your sprites, is enabled. Thats just my first thought.

I tried and I didn't achieve anything

 

[Gesior.pl]

What could be causing these sprite mismatches?

You should show that location in both clients, so we can compare what is wrong.
It looks like different screen size (in OTCv8 called 'aware range'). You probably increased number of tiles send by server to see more tiles around in your custom client. Now OTCv8 receives them in columns, expecting them to by 'RL Tibia Client' columns size, but your server sends more than default value of tiles per column, so it puts them in wrong places on screen.

I'm also receiving these error messages from ProtocolGame's parsing in the console:

After first error after login, you can ignore all other errors, they are just result of previous bad packets.
OTCv8 generates packets.log file with all wrong packets. You have to analyse first wrong packet after relog.