The rate is dropping fast now but will start to level off after several months.
SPS was a very similar airdrop and it also had a very high APR at the beginning but now after almost 1.5 years it still has an APR of 25% which is quite good. Also something to learn from SPS is that the price rose to around $1 early on, and is now 4 cents.
GLX is 29 cents now and it tempts people who are getting it airdropped for free to sell, but that APR is also tempting them to hold and Stake! I can't advise one way or the other, not investment advice, do your own research as always.