stretched logo

I have an older hackintosh. It's a legacy machine (no uefi). My Clover menu used to be a well defined clear 1920 x 1080 and the Apple boot logo use to appear in it's proper 'unstretched' size immediately upon boot. Somewhere between Sierra & High Sierra that changed and now the Clover menu is...

Clover boot screen used to be properly sized (1080x1920). But since recreating Clover after my boot SSD died, I am stuck with this annoying giant icon boot screen and also the old stretched apple logo. The stretched logo changes to correct size on stage 2 of the boot process. This is minor but...

I have installed OS X Yosemite on my HP probook 4540s. Everything is working fine except at the apple boot screen, the logo is a little stretched at first, but after some time, it goes back to normal and boots. It is a minor problem, and I have already tried setting bios to UEFI without CSM, and...