Stop file caching for a subfolder

Hi - I have installed EE for my domain using:

sudo ee site create domain.com --wpfc

I have placed some static, non wordpress .php files in a subfolder called /LP/

/var/www/domain.com/htdocs/LP/

When I run .php files within this /LP/ subfolder, the output stays the same as the original .php file, even when I update the .php file to give a different output.

There must be some form of caching happening, that stops the updated .php file giving a new output. It just gives the original output.

How do I stop caching - or whatever is causing this - for the whole subdirectory of /LP/?

Thanks, Alex

NGINX.CONF:

user www-data; worker_processes auto; worker_rlimit_nofile 100000; pid /run/nginx.pid;

events { worker_connections 4096; multi_accept on; }

http { ## # EasyEngine Settings ##

sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 30;
types_hash_max_size 2048;

server_tokens off;
reset_timedout_connection on;
add_header X-Powered-By "EasyEngine 3.7.4";
add_header rt-Fastcgi-Cache $upstream_cache_status;

# Limit Request
limit_req_status 403;
limit_req_zone $binary_remote_addr zone=one:10m rate=1r/s;

# Proxy Settings
# set_real_ip_from	proxy-server-ip;
# real_ip_header	X-Forwarded-For;

fastcgi_read_timeout 300;
client_max_body_size 100m;

##
# SSL Settings
##

ssl_session_cache shared:SSL:20m;
ssl_session_timeout 10m;
ssl_prefer_server_ciphers on;
ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH";
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

##
# Basic Settings
##
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;

include /etc/nginx/mime.types;
default_type application/octet-stream;

##
# Logging Settings
##

access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;

# Log format Settings
log_format rt_cache '$remote_addr $upstream_response_time $upstream_cache_status [$time_local] '
'$http_host "$request" $status $body_bytes_sent '
'"$http_referer" "$http_user_agent"';

##
# Gzip Settings
##

gzip on;
gzip_disable "msie6";

gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types
    application/atom+xml
    application/javascript
    application/json
    application/rss+xml
    application/vnd.ms-fontobject
    application/x-font-ttf
    application/x-web-app-manifest+json
    application/xhtml+xml
    application/xml
    font/opentype
    image/svg+xml
    image/x-icon
    text/css
    text/plain
    text/x-component
    text/xml
    text/javascript;

##
# Virtual Host Configs
##

include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;

}