I used and tested until
du_tuna-v11.7-20170818-1148-UNOFFICIAL.zip - it was without CMA afaik and it was very stable. But the device is not at my hands now so I cannot retest... (and did not use the September's release).
Another choice are @zeelog 's fine, fast and stable unofficial LOS 14.1 and RR builds, both on Android N, see
http://zeelogkang.blogspot.com
He definitely dropped CMA Support in favor of z-ram for probably better stability.
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