For Suburban House 4 remove these lines from the config file;
smoke0 {
    attachment                    "a.smoke0"
    mode                        "timeofday"
    color                        200,200,200,250
    accel                        0,0.2,0
    start                        0.375
    period                        0.875
    rate                        4
    velocity                    1
    lifetime                    3
    minsize                        0.5
    maxsize                        1.5
}
smoke1 {
    attachment                    "a.smoke1"
    mode                        "timeofday"
    color                        200,200,200,250
    accel                        0,0.2,0
    start                        0.375
    period                        0.875
    rate                        4
    velocity                    1
    lifetime                    3
    minsize                        0.5
    maxsize                        1.5
}
You can do the same for other items by removing the smoke blocks. (I've noticed some of them have up to 8 smoke effects which must impact framerates a bit).
Mike.