Hash Mode and Throughput Problems With GS724Tv4 Link Aggregation (LAG) Using LACP With Synology

This is an updated set of questions to a problem that I had with a similar scenario here. Basically, with the previous scenario, I was able to "fix" the issue by setting the hash policy to "layer3+4".

I have since upgraded the GS116Ev2 to GS724Tv4 (firmware 6.3.1.36) and am now using LACP instead of static LAG. Default hash policy "layer2 0" on the Synology would only result in 1Gbps bandwidth while pulling with two clients. This is again "fixed" by changing the hash policy to "layer3+4".

My questions:

1) Is it because that the GS724Tv4 remains a layer 2 switch and the LAG to Syno continue to use 1 MAC address that while operating hash policy "layer 2 0" that I'm only able to pull 1Gbps? This is regardless of whether my LAG is connected using static or LACP?

2) Is there a setting that I can set on GS724Tv4 that would recognize that the Syno LAG is actually two MAC addresses and thus would allow hash policy "layer 2 0" to work?