Easier solution to double-check: turn off all the LED lights.
The driver circuits in the LEDs can cause interference. A higher quality LED bulb/driver could solve this.
Removing only the LEDs near the garage may help if it wouldn't be too extreme.
A bit of googling indicates the interference could be fixed with ferrite chokes or line filters at the LED fixtures. Higher quality LED drivers should have these built-in but cheaper ones might not do an adequate job of filtering the interference.
The driver circuits in the LEDs can cause interference. A higher quality LED bulb/driver could solve this.
Removing only the LEDs near the garage may help if it wouldn't be too extreme.
A bit of googling indicates the interference could be fixed with ferrite chokes or line filters at the LED fixtures. Higher quality LED drivers should have these built-in but cheaper ones might not do an adequate job of filtering the interference.