I'm using the Wolf Aeon GPU Miner (forked by Arux-BTT) on mini rig 2x RX460
Same for your config and your build on all (minergate, cryptopool, sumominer) pools - low difficulty rejected shares only. RX 460, Crimson 17.4.3 and two previous driver versions.
I' m using Crimson 16.9.2 on W7 pro sp1, try to downgrade the driver !
For reference : 2 x RX 460 2G .. up to 1225 H/s with AEON algo, try even the old version of miner. On aeon.kryptopool.com try on 3333 port to see if it starts ... i.e. stratum+tcp://mine.aeon-pool.com:3333
try to reduce intensity and worksize until the miner start!