Bah I just use a slow enough shutter speed, works 100% of the time (unless it's very high frequency around 2Khz, at what point it wouldn't affect you anyway),
https://i.imgur.com/pdLSOkh.jpg
Figure 1: An ASUS laptop
http://i.imgur.com/pHxGhlb.jpg
Figure 2: Macbook Pro 15 (2015)
Spoiler of new video I filmed at best buy (MacBookPro 15in 2015 and iMac fine, bunch of shitty PC laptops with flicker 😛)
SOMEONE HALP ME WITH THIS MIGRAINE AHHHHH