I installed antergos after windows 10, both uefi.
After install, it kept booting on windows so I had to mess with /boot/ a bit.
Now I have Antergos and windows in antergos grub at boot ; it’s all good.
I used grub-customizer to add kernel LTS in main grub menu. When I try to boot on it, it goes to grub again (loop).
Normal antergos boot still works well.
linux, linux-lts, linux-kernel and linux-lts-kernel are up to date.
I don’t know if should post all the content of /boot/ to get help.