You might be limited by the platform, as in, mainboard setting some subtiming way to tight, hence necessity for 1.84V. Usually even Kingston Hypers are not so bad.
On tRCD - 1020 hardly tells you anything. tRCD 6 would be extremely impressive (only Hicookie's GTX2 were capable of such a feat), tRCD 7 is standard on 90-95% of sticks. If tRCD 8 is necessary at 1020 then kit is garbage.