The same problem appeared today, after two minutes of normal work mistakes pour

[2019-01-30 21:46:58] Pool difficulty: 25911
[2019-01-30 21:46:58] Pool sent a new job (ID: 481557346041624)
[2019-01-30 21:47:18] Pool sent a new job (ID: 805977737955660)
[2019-01-30 21:47:56] Pool sent a new job (ID: 138872683910235)
[2019-01-30 21:48:22] Warning: Too many compute errors -> GPU BUS_ID[1] (15)
[2019-01-30 21:48:22] Warning: Too many compute errors -> GPU BUS_ID[1] (16)
[2019-01-30 21:48:28] Pool difficulty: 17274
[2019-01-30 21:48:28] Pool sent a new job (ID: 684682065991684)
[2019-01-30 21:48:45] Warning: Too many compute errors -> GPU BUS_ID[1] (17)

rx 550 2gb - drivers 18.5.1