It may be worthwhile to work on the speaker placement as this will often produce the biggest improvement apart from room treatment. I've looked at the pictures of your room, personally I don't think you need any commercial room treatment though you can try some bass traps if feasible.
If there is allowance to tinker with placement, I would suggest moving the speakers out into the room by 2 to 3 feet or pushing the TV further back to the wall by a foot(if possible), or both together. The intention is to move the speakers out so that they are not in the same plane as the TV.
After the speakers are moved further out into the room, you may find improvements in the imaging and the sound may become airier and more enveloping, although bass may suffer a little. A TV in between the speakers, especially when placed on the same plane as the speakers is often bad for stereo imaging. You may wish to push the listening chair back further if necessary. For the 805S, near to midfield listening(6 to 8 feet distance away from speakers) is the best configuration.
As others have suggested, you can experiment with cover material on the TV. The effects will be less noticeable with the speakers further out into the room.
If there is allowance to tinker with placement, I would suggest moving the speakers out into the room by 2 to 3 feet or pushing the TV further back to the wall by a foot(if possible), or both together. The intention is to move the speakers out so that they are not in the same plane as the TV.
After the speakers are moved further out into the room, you may find improvements in the imaging and the sound may become airier and more enveloping, although bass may suffer a little. A TV in between the speakers, especially when placed on the same plane as the speakers is often bad for stereo imaging. You may wish to push the listening chair back further if necessary. For the 805S, near to midfield listening(6 to 8 feet distance away from speakers) is the best configuration.
As others have suggested, you can experiment with cover material on the TV. The effects will be less noticeable with the speakers further out into the room.