I'm not familiar with high doses of LSA, the most was I've had is 8 HBWR seeds by themselves, so I can't compare the experience below to a strong LSA trip - just recount the effects in general.
I find doses of even 3-4 seeds uncomfortable: odd breathing, zoning out, chaotic thought processes... These things are not difficult in themselves, but the LSA lens through which all those are experienced is just not my bag.
Before trying this mixture, I read all the experience reports I could find on it. Some were positive. Passing out is not uncommon.
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5 HBWR seeds with 3g syrian rue were consumed. Within an hour I passed out propped on my side and had some strange dreams with very little recollection. Waking up 4-5 hours later, I felt renewed and confused.
There was a strong desire to purge, and the sounds of heaving were very distorted. Some part of me said everything was absorbed already and I should focus on short breaths to keep the stomach contractions at bay.
No classic 'visuals', but definite visual effects were present. When I looked at the ceiling, it felt like my face was on and in it. My open eye visual screen was choppy, like someone had taken a painting and folded parts of it away. Think of normally seeing 'left-middle-right' and I was seeing 'left-right', with the middle just folded out of view. However, it was happening with overlaying shapes making a tunnel (looking down a tunnel of overlaying squares and diamonds), folding things away in their edges.
I have never done yoga, but there were thoughts of it being similar to some yogic states. Also a voice told me many times, "remember your training" which helped me cope with the experience quite a bit. I have had no 'training', so this is pretty amusing.
The sickness and effects subsided slowly over the following day. For the next two or three days, my brain was very foggy and had trouble calling up appropriate words or simple facts. I was mentally 'slow' and did not like it one bit.
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Though LSA may be interesting, I've since put it on my list of "things that intoxicate me" and have not been back to it. I love my brain, and my brain does not love LSA. This experience, especially the after-effect, has really turned me off of LSA. Although, Rivea or LSH may be on the menu in the distant future.